SNMG 120404 NS520 Wendeplatten - Tungaloy

Benefit from consistent surface finish, controlled wear and straightforward ISO compatibility with the NS520 cermet grade for finishing and light machining. Order the insert directly via Metav Werkzeuge or ask the consultants if additional machining data is required.

SNMG 120404 NS520 Tungaloy — Indexable Turning Insert, cermet finishing grade

A SNMG 120404 NS520 indexable insert designed for turning applications, optimised for finishing to light machining of steel where surface quality and dimensional stability are critical

• Cermet grade NS520 for finishing
• Double-sided chipbreaker for consistent chips
• ISO SNMG 120404 square insert, 12 mm
• 0° clearance for secure seating

Consistent finishing and controlled wear for steel turning

The NS520 grade is a cermet / coated cermet composition developed for the finishing to light machining of steel, prioritising surface finish and dimensional accuracy. Cermet combines ceramic hardness with metallic toughness, which promotes a fine, stable cutting edge and reduces built-up edge; the result is a reproducible surface quality and predictable wear. For production environments requiring uniform part appearance and repeatable tolerances, this material choice offers an effective balance between tool life and part quality.

ISO-compliant geometry for reliable clamping and replacement

Designed as an ISO SNMG 120404 square insert, the geometry ensures compatibility with standard external holders and boring bars as determined by form, relief angle, tolerance class, fastening and size. Key specifications include a 12 mm inscribed circle, 4.76 mm plate thickness, a 0.4 mm corner radius and a cylindrical hole for secure mounting. The double-sided chipbreaker and 0° clearance facilitate consistent chip formation and stable seating in the pocket, simplifying tool changes and reducing setup variability across shifts.

Application guidance to enhance process reliability

Typical use is for both external and internal turning where finishing and light stock removal are required; matching the double-sided chipbreaker and grade to component material and machining stability is essential. The insert forms part of a system comprising an insert, a compatible external holder or boring bar, a shim/lockset and replacement screws. For best results, select feeds and depths aligned with finishing objectives rather than heavy metal removal; this approach supports the NS520’s strengths in surface quality and even flank wear while maintaining efficient cycle times.

Select the Tungaloy NS520 SNMG insert for reproducible finishing performance and contact Metav Werkzeuge for tailored technical advice at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6806653
• Manufacturer SKU: TUN6806653
• Manufacturer: Tungaloy

Facts

• ISO designation: SNMG120404
• Size (inscribed circle): 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.4 mm
• Relief angle: 0°
• Included angle: 90°

Special features

• Grade: NS520
• Material: carbide base with cermet / coated cermet
• Chipbreaker: double-sided
• Hole: cylindrical hole (with hole)
• Shape: square indexable insert
• Typical application: turning (external and internal)

FAQ

What materials is this insert optimised for?
The SNMG120404 NS520 insert is optimised for machining steel in finishing to light machining operations, with the NS520 cermet focusing on surface quality and consistent wear.

Is the insert compatible with standard ISO holders?
Compatibility with ISO holders is ensured by the SNMG120404 geometry (form, tolerance class, fastening, size and thickness); the square shape, cylindrical hole and 0° relief angle conform to standard insert pockets.

How does the double-sided chipbreaker help the process?
The double-sided chipbreaker on this grade promotes controlled chip formation and even cutting forces, improving surface finish and reducing the risk of irregular wear during finishing passes.

What system components are needed for correct mounting?
A complete system includes the insert, a matching external holder or boring bar, a shim/lockset and replacement screws; correct clamping and tolerance class matching are important for secure seating.

Can this insert be used for internal turning as well as external turning?
Yes, the geometry and grade are suitable for both external and internal turning when selected with appropriate holders and machining parameters.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.